Usage
concstats_grs(x, na.rm = TRUE)
Arguments
- x
A non-negative numeric vector.
- na.rm
a logical vector that indicates whether NA values should
be excluded or not. Must be either TRUE or FALSE. The default
is TRUE.
If set to FALSE the computation yields NA if vector contains
NA values.
Value
A single numeric measure in decimal form.
References
Ginevicius, R. and S. Cirba (2009). "Additive measurement of
market concentration", Journal of Business Economics and Management,
10(3), 191-198.
Examples
# a vector of market shares
x <- c(0.4, 0.2, 0.25, 0.1, 0.05)
concstats_grs(x)
#> [1] 0.3984364
# a vector with NA values
x <- c(0.4, 0.2, 0.25, 0.1, 0.05, NA)
concstats_grs(x, na.rm = FALSE)
#> [1] NA
